Nematode diversity and distribution in the southern maritime Antarctic - clues to history?
Nematode worms are one of the most important soil faunal groups in Antarctica. However, relatively little is known about their wider distribution, biogeography and history in the region, and taxonomic information remains confused or incomplete. Here, we hypothesise that the Alexander Island (souther...
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ftnerc:oai:nora.nerc.ac.uk:82 2024-06-09T07:37:51+00:00 Nematode diversity and distribution in the southern maritime Antarctic - clues to history? Maslen, N.R. Convey, P. 2006 http://nora.nerc.ac.uk/id/eprint/82/ https://doi.org/10.1016/j.soilbio.2005.12.007 unknown Elsevier Maslen, N.R.; Convey, P. orcid:0000-0001-8497-9903 . 2006 Nematode diversity and distribution in the southern maritime Antarctic - clues to history? Soil Biology and Biochemistry, 38 (10). 3141-3151. https://doi.org/10.1016/j.soilbio.2005.12.007 <https://doi.org/10.1016/j.soilbio.2005.12.007> Zoology Publication - Article PeerReviewed 2006 ftnerc https://doi.org/10.1016/j.soilbio.2005.12.007 2024-05-15T08:39:04Z Nematode worms are one of the most important soil faunal groups in Antarctica. However, relatively little is known about their wider distribution, biogeography and history in the region, and taxonomic information remains confused or incomplete. Here, we hypothesise that the Alexander Island (southern maritime Antarctic) fauna includes elements that have survived (at least) the period of Pleistocene glaciation in situ, forming a regional centre of endemism and biodiversity hotspot. We describe nematological surveys carried out across a latitudinal gradient between 68 and 771S along the southern Antarctic Peninsula, comparing the data obtained with the maritime Antarctic fauna described in the few previous studies between northern Marguerite Bay and the South Orkney Islands (60–681S). In general, our survey supports previous findings of a lack of overlap at species level between the maritime and continental Antarctic biogeographical zones, with the large majority of specimens obtained from all survey sites being attributable to known maritime or new and currently endemic taxa. However, collections from Alexander Island, Alamode Island and the most westerly site sampled, Charcot Island, include specimens morphologically very close to two known continental Antarctic species, which may indicate a link between the two regions. The fauna obtained at the northern study sites (ca. 681S, Adelaide Island, Marguerite Bay) closely matches that described previously. However, in contrast with widely described patterns of decreasing diversity in other Antarctic biota, species richness increased markedly at locations on Alexander Island (ca. 721S), including a substantial element of undescribed species (50% of taxa across all locations, 40% of taxa found on Alexander Island). Finally, the most southerly samples obtained, from inland nunataks in Ellsworth Land (75–771S), indicate a fauna that does not include nematodes, which is exceptional not only in an Antarctic context but also for soils worldwide. Article in Journal/Newspaper Adelaide Island Alamode Island Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Charcot Island South Orkney Islands Nematode worms Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula South Orkney Islands ENVELOPE(-45.500,-45.500,-60.583,-60.583) Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Alexander Island ENVELOPE(-69.895,-69.895,-71.287,-71.287) Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) Adelaide Island ENVELOPE(-68.914,-68.914,-67.762,-67.762) Ellsworth Land ENVELOPE(-85.000,-85.000,-75.000,-75.000) Charcot Island ENVELOPE(-75.250,-75.250,-69.750,-69.750) Alamode ENVELOPE(-67.533,-67.533,-68.717,-68.717) Alamode Island ENVELOPE(-67.497,-67.497,-68.711,-68.711) Soil Biology and Biochemistry 38 10 3141 3151 |
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Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Zoology |
spellingShingle |
Zoology Maslen, N.R. Convey, P. Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
topic_facet |
Zoology |
description |
Nematode worms are one of the most important soil faunal groups in Antarctica. However, relatively little is known about their wider distribution, biogeography and history in the region, and taxonomic information remains confused or incomplete. Here, we hypothesise that the Alexander Island (southern maritime Antarctic) fauna includes elements that have survived (at least) the period of Pleistocene glaciation in situ, forming a regional centre of endemism and biodiversity hotspot. We describe nematological surveys carried out across a latitudinal gradient between 68 and 771S along the southern Antarctic Peninsula, comparing the data obtained with the maritime Antarctic fauna described in the few previous studies between northern Marguerite Bay and the South Orkney Islands (60–681S). In general, our survey supports previous findings of a lack of overlap at species level between the maritime and continental Antarctic biogeographical zones, with the large majority of specimens obtained from all survey sites being attributable to known maritime or new and currently endemic taxa. However, collections from Alexander Island, Alamode Island and the most westerly site sampled, Charcot Island, include specimens morphologically very close to two known continental Antarctic species, which may indicate a link between the two regions. The fauna obtained at the northern study sites (ca. 681S, Adelaide Island, Marguerite Bay) closely matches that described previously. However, in contrast with widely described patterns of decreasing diversity in other Antarctic biota, species richness increased markedly at locations on Alexander Island (ca. 721S), including a substantial element of undescribed species (50% of taxa across all locations, 40% of taxa found on Alexander Island). Finally, the most southerly samples obtained, from inland nunataks in Ellsworth Land (75–771S), indicate a fauna that does not include nematodes, which is exceptional not only in an Antarctic context but also for soils worldwide. |
format |
Article in Journal/Newspaper |
author |
Maslen, N.R. Convey, P. |
author_facet |
Maslen, N.R. Convey, P. |
author_sort |
Maslen, N.R. |
title |
Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
title_short |
Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
title_full |
Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
title_fullStr |
Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
title_full_unstemmed |
Nematode diversity and distribution in the southern maritime Antarctic - clues to history? |
title_sort |
nematode diversity and distribution in the southern maritime antarctic - clues to history? |
publisher |
Elsevier |
publishDate |
2006 |
url |
http://nora.nerc.ac.uk/id/eprint/82/ https://doi.org/10.1016/j.soilbio.2005.12.007 |
long_lat |
ENVELOPE(-45.500,-45.500,-60.583,-60.583) ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) ENVELOPE(-69.895,-69.895,-71.287,-71.287) ENVELOPE(139.017,139.017,-69.367,-69.367) ENVELOPE(-68.914,-68.914,-67.762,-67.762) ENVELOPE(-85.000,-85.000,-75.000,-75.000) ENVELOPE(-75.250,-75.250,-69.750,-69.750) ENVELOPE(-67.533,-67.533,-68.717,-68.717) ENVELOPE(-67.497,-67.497,-68.711,-68.711) |
geographic |
Antarctic Antarctic Peninsula South Orkney Islands Marguerite Marguerite Bay Alexander Island Charcot Adelaide Island Ellsworth Land Charcot Island Alamode Alamode Island |
geographic_facet |
Antarctic Antarctic Peninsula South Orkney Islands Marguerite Marguerite Bay Alexander Island Charcot Adelaide Island Ellsworth Land Charcot Island Alamode Alamode Island |
genre |
Adelaide Island Alamode Island Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Charcot Island South Orkney Islands Nematode worms |
genre_facet |
Adelaide Island Alamode Island Alexander Island Antarc* Antarctic Antarctic Peninsula Antarctica Charcot Island South Orkney Islands Nematode worms |
op_relation |
Maslen, N.R.; Convey, P. orcid:0000-0001-8497-9903 . 2006 Nematode diversity and distribution in the southern maritime Antarctic - clues to history? Soil Biology and Biochemistry, 38 (10). 3141-3151. https://doi.org/10.1016/j.soilbio.2005.12.007 <https://doi.org/10.1016/j.soilbio.2005.12.007> |
op_doi |
https://doi.org/10.1016/j.soilbio.2005.12.007 |
container_title |
Soil Biology and Biochemistry |
container_volume |
38 |
container_issue |
10 |
container_start_page |
3141 |
op_container_end_page |
3151 |
_version_ |
1801376334767718400 |